Results 1 to 10 of 21
11LikesThread: Latest flea market Coticule
LinkBack URL
About LinkBacksHybrid View
-
08-12-2012, 03:22 PM #1Senior Member
- Join Date
- Jul 2011
- Location
- Ponca City, Oklahoma
- Posts
- 605
Thanked: 66
Latest flea market Coticule
Found this at the flea market today, I about had a stroke. I don't know much about Coti's. So I am wondering what this black spots mean? I was thinking it has a different name or shows different quality when this are present in the layer? Please educate me of that is possible. Thankyou for your time,
Last edited by sidmind; 08-13-2012 at 02:30 AM.
-
08-12-2012, 04:20 PM #2I Bleed Slurry
- Join Date
- Feb 2009
- Location
- Carmel, NY
- Posts
- 2,458
Thanked: 545
Black spots or lines on a coticule are usually manganese deposits. Usually this will make the stone faster than usual ones. Try it with water and see if you get metal on the stone.
Old coticules are nearly impossible to identify by layer as they are no longer mined. I do like my old stones better, enjoy!
-
08-12-2012, 04:24 PM #3Senior Member
- Join Date
- Sep 2010
- Location
- baltimore md
- Posts
- 1,066
Thanked: 242
+1 on the manganese deposits
-
08-12-2012, 04:48 PM #4Senior Member
- Join Date
- Jul 2011
- Location
- Ponca City, Oklahoma
- Posts
- 605
Thanked: 66
Thank you for the info. Sounds like I should probably keep this one for my collection.
-
08-12-2012, 05:06 PM #5Senior Member
- Join Date
- Apr 2008
- Posts
- 1,689
Thanked: 244
The lines are probably manganese, the spots, I would guess are BBW leaching into the coticule. Lovely looking stone, try it out and see.
-
08-12-2012, 05:19 PM #6< Banned User >
- Join Date
- Jul 2011
- Posts
- 471
Thanked: 46
small spotted coti?
-
08-12-2012, 08:43 PM #7Senior Member
- Join Date
- Sep 2010
- Location
- baltimore md
- Posts
- 1,066
Thanked: 242
manganese deposits !
Originally Posted by AlanII
Reply With Quote